If there is no good or evil then why does he condemn faith or what false Christians have done against humanity as evil such as the Inquisition and the Crusades? If everything was just pitiless indifference then why should faith be considered evil? Did not some atheists say, "Sin is just a fantasy word, people were just doing what they can to survive." Are acts like murder, robbery, homosexuality, adultery, fornication and all justifiable all in the name of trying to survive? Not a chance because when it comes to sin, God is consistent with what sin is as He is holy, holy and holy.
Atheists tend to appeal to morals only when they are hurt or for their own convenience. There is the tendency to say, "There are no morals. I do what I do." But observe how they end up becoming whiny when something bad happens to them like if a loved one got murdered, they got hurt, their property got hit then they play the victim If there is no evil and it is all done in the name of survival then the right to complain when you are a victim should not exist. But because of sin, God was more than merciful and just enough to set consequences for sin because He hates sin and what it does to people.